000 02706nab a2200373 c 4500
001 vtls000533911
003 RU-ToGU
005 20210907024410.0
007 cr |
008 181202|2015 xxu s a eng d
024 7 _a10.1016/j.physletb.2015.07.079
035 _ato000533911
040 _aRU-ToGU
245 1 0 _aSearch for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector
_cG. Aad, B. Abbott, J. Abdallah [et.al.]
504 _aБиблиогр.: 97 назв.
520 3 _aA search for the associated production of the Higgs boson with a top quark pair is performed in multilepton final states using 20.3 fb−1 of proton-proton collision data recorded by the ATLAS experiment at s√=8 TeV at the Large Hadron Collider. Five final states, targeting the decays H→WW∗, ττ, and ZZ∗, are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons (e or μ) without a hadronically decaying τ lepton; three light leptons; two same-charge light leptons with a hadronically decaying τ lepton; four light leptons; and one light lepton and two hadronically decaying τ leptons. No significant excess of events is observed above the background expectation. The best fit for the ttH production cross section, assuming a Higgs boson mass of 125 GeV, is 2.1+1.4−1.2 times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The p-value for compatibility with the background-only hypothesis is 1.8σ; the expectation in the presence of a Standard Model signal is 0.9σ.
653 _aATLAS, детектор
653 _aБольшой адронный коллайдер
653 _aХиггса бозон
653 _aстолкновение частиц
653 _aлептоны
653 _aкварки
655 4 _aстатьи в журналах
700 1 _aAad, G.
700 1 _aAbdallah, J.
700 1 _aChelkov, G. A.
700 1 _aAbbott, B.
710 2 _aТомский государственный университет
_bРадиофизический факультет
_bНаучные подразделения РФФ
773 0 _tPhysics Letters B
_gVol. 749. P. 519-541
852 4 _aRU-ToGU
856 7 _uhttp://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000533911
908 _aстатья
999 _c391903